import { HttpClient } from '@angular/common/http';
import { Observable } from 'rxjs';
export declare class DatabaseGwService {
    private $http;
    private $env;
    URL_PATH: string;
    constructor($http: HttpClient, $env: any);
    /**
     * Method request to API to create record depend on object extends it
     * @param records 		Object | Array of record that want to create
     * @returns Observable<any>
     */
    create(records: any, customPath?: string, optionHeader?: any): Observable<any>;
    /**
   * Method request to API to update record depend on object extends it
   * @param records 		Object | Array of record that want to update
   * @returns Observable<any>
   */
    update(records: any, customPath?: string, optionHeader?: any): Observable<any>;
    /**
   * Method request to API to delete record depend on object extends it
   * @param records 		Object | Array of record that want to delete
   * @returns Observable<any>
   */
    delete(records: any, customPath?: string, optionHeader?: any): Observable<any>;
    /**
   * Method request to API to get record depend on object extends it
   * @param filter 		filter object condition *required model_name
   * @returns Observable<any>
   */
    query(filter?: any, customPath?: string, optionHeader?: any): Observable<any>;
    /**
   * Method request to API to create or update record depend on object extends it
   * @param records 		Object | Array of record that want to create or update
   * @returns Observable<any>
   */
    upsert(records: any, customPath?: string, optionHeader?: any): Observable<any>;
    private getObjectName;
    private isNotEmpty;
}